Mobile-gun mount.



N. KOCH.

MOBILE GUN MOUNT.

APPLICATION mum SEPT. 28, 1912.

1,108,762. Patented Aug. 25, 191 i THE NORRIS PETERS CO., PHOTO-LITHO.. W'1SHINGTON,D. Cv

UNITED STATES PATENT OFFICE.

NORBERT KOCH, 0F ESSEN-RELLINGHAUSEN, GERMANY, ASSIGNOR TO FRIED. KRUPP AKTIENGESELLSCHAFT, OF ESSEN-ON-THE-RUHR, GERMANY.

MOBILE-GUN MOUNT.

Specification of Letters Patent.

Application filed September 28, 1912. Serial No. 722,953.

To all whom it may concern:

Be it known that I, NORBERT Koon, residing at Essen-Rellinghausen, Germany, a subject of the Emperor of Germany, have invented a certain new and useful Improvement in Mobile-Gun Mounts, of which the following is a specification.

This invention relates to such mobile gun mounts that are provided with a device for fineside adjustment.

The object of the present invention is to construct this kind of gun mounts in such a manner, that the gun may be directedwithout interruption against a quickly passing target, as for'instance an air ship.

On the drawing is illustrated one embodiment of the invention applied to a gun mount, in which the trail is adapted to turn relative to the spade which is mounted in the trail end for rough or approximate traversing while the trail wheels may be held in an aiming position.

Figure 1 shows a side elevation, partly in section, of the parts of the gun carriage that are necessary to explain the invention. Fig. 2 a top plan view of Fig. l and Fig. 3 de tails in larger scale. 7

The spade B is mounted, by means of a vertical pivot 6 in the trail end of the bottom carriage A. At the other end of the bottom carriage the cranked wheel axle C is secured, at the free ends of which are hinged by means of vertical bolts 0 the axle arms C see Fig. 2, and which carry the wheels D D The axle arms C may be secured on the wheel axle both in the traveling position and in the aiming position illustrated.

in the drawing. In the aiming position, the axis ofirotation of the wheels D D intersect the axis of the spade pivot 6 whereby a change in the traversing of the gun mount within sufficiently wide limits is possible, without .lifting the spade out of the ground.

For rough laying, that is for driving the trail wheel D, situated in the aiming position, the following device is provided, see for instance Fig. 3. A bearing piece E is fixed on the wheel axle C and in which the shaft 1 of the hand wheel F is mounted.

which worm is in mesh with a worm wheel H. The shaft 9 and the worm wheel H are mounted in the housing E secured on the bearing piece E. A shaft is is non-revolubly and non-slidably connected with the worm wheel H. The shaft 7c carries a slidably but non-revolubly connected spur wheel K, which is intended to cooperate with a toothed ring D on the trail wheel D, when the wheel D is in the aiming position illustrated on the drawing. A helical spring k holds the spur Wheel K in the positionindicated on the drawing, that is .in the working position. The spur wheel abuts in this position against a nut 70 The slidable arrangement of the spur wheel K has for object to make it possible for the spur wheel to yield, should a tooth of the. toothed ring I) happen to strike against a tooth of the spur wheel K by swinging the trail wheels D into the aiming position. Should this happen, the spur wheel is turned by means of the hand wheel F until the springlc throws it into engagement with the toothed ring D The bottom carriage A carries a top carriage M provided with bearings m for the horizontal trunnions of the cradle, said top carriage being adapted for fine training around the axis of a vertical trunnion m For laying the top carriage relative to the bottom carriage, a training gear, indicated in the drawing Fig. 2, is provided having a hand wheel designated with N.

The bearing piece E has a carrier Pfor a scale p on which may be observed, by means of a pointer R, the angular position between the top and bottom carriages M and A. The pointer R is journaled in a bracket S, which is attached to the bottom carriage A, and the pointer is moreover connected with the top carriage through a link 1' so that it partakesofthe movement of the top carriage. pointer R are so situated that the gunner, operating the hand wheel F, can observe the pointer without taking his hand off the hand wheel. With the top carriage in its middle position relative to the bottom carriage, the pointer stands over the zero-point on the scale p The firing against a passing target, such as an airship, from a gun mount of the described kind, with the carriage wheels in the aiming position, the gun having the desired The scale 19 and the elevation, is first given a side direction to enable the target to be seen in the field of the sighting telescope, while still retaining the top carriage M in its middle position on the bottom carriage A. To do this, the mount is either swung around by raising and displacing the trail end sidewise or else by driving the carriage wheel I) by means of the hand wheel F. The gunner attending the training gear N, who in the following will be designated as sight guard I, thereupon aims the cross hair of the sighting telescope against the target by swinging the top-carriage M relative to the botton1carriage A. The pointer R will then move to the right, if the target is moving to the right. As soon as the gunner attending the hand wheel F, who in the following will be designated sight guard II, notices the movement of the pointer R, which he has to observe, he trains the gun mount by running the wheel D by means of the hand wheel F, in the same direction as the pointer has moved, that is in this instance toward the right. Sight guard II thereby cooperates in the training with sight guard I, so that the topcarriage need be swung relative to the bottom carriage an angle which only amounts to a small part of the total angle in which the top carriage may be trained out of its middle position by means of the training gear. Sight guard I is therefore able to follow the target by means of the training gear, as soon as he has brought the cross hair of the telescope on the target. \Vhen this takes place, sight guard II, observing the movement of the pointer R, again turns the hand wheel F so long as the pointer is moving. To follow the target in this manner, the sight guard I need only to swing the top carriage a very small amount, in order to continually follow the target with the assistance of the sight guard II. Should the pointer R in following the target, have almost reached the one end of the scale p which means that the top carriage has nearly reached the limit of training in one direction, sight guard II has in consequence to train the gun mount faster and to continue therewith until he finds from the movement of the pointer, that sight guard I has swung the top carriage b-ackin order to keep the cross hair of the telescope directed on the target. It is in any case possible for sight guard II, by observing the movement of the pointer and swinging the gun mount, to assist sight guard I, so that the latter is able to continually maintain the fine training,

that is, that the total training of the top carriage will never be exceeded. With the described relative positions of the hand wheel F and the pointer R no explanation by word of mouth or by order is necessary between the two Sight guards.

As indicated in Fig. 2 a pointer T, at-

tached to the front face of the top carriage M, which pointer cooperates with a scale, attached to a bracket V on the front face of the bottom carriage A, indicates similarly to the pointer R and scale p, in which direction the top carriage is being trained relative to the bottom carriage. This arrangement has the following object. Under certain conditions, as for instance in firing on soft ground, the gunner, attending hand wheel F, will not alone be able to train the gun mount, or only with the greatest exertions. In that case he will be assisted by another man of the gun service in the swingin of the gun mount, through the latters ta ing hold of the spokes and then pulling one of the wheels, or through his pushing en one or the other of the wheels D or D in the direction of the swinging of the gun mount. The man assisting sight guard II in the swinging of the gun mount, may then, by observing the pointer T, know how far the gun mount need to be swung, just as well as sight guard II, by observing pointer R.

I claim:

1. A mobile gun having a bottom-carriage and a top carriage pivoted thereon, a training gear for fine training interposed between said carriages, a second training gear for rough training of the bottom-carriage and an indicating device for showing the direction and amount of fine training between said top and bottom carriages; said indicating device being arranged in the vicinity of the driving member of the training gear for rough training, in order to enable the gunner attending the training gear for rough training to observe said indicating device.

2. A mobile gun having a bottom carriage and a top carriage pivoted thereon, a training gear for fine training interposed be tween said carriages, a fixed training center for the bottom carriage, wheels on said bot tom carriage and axle arms for said wheels whose axes intersect with the axis of said fixed center when the wheels are in their training position, a training gear for rough training adapted to rotate said wheels in order to train the bottom carriage around said fixed center, and an indicating device for showing the direction and amount of fine training between said top and bottom carriage, said indicating device being arranged in the vicinity of the driving member of the training gear for rough training, in order to enable the gunner attending the training gear for rough training to observe said indicating device.

3. A mobile gun having a bottom carriage and a top carriage pivoted thereon, a traincenter When the wheels are in their training position, a training gear for rough training adapted to rotate said Wheels in order to train the bottom carriage around said fixed center, and tWo indicating devices for showing the direction and amount of fine training between said top and bottom carriage, one of said indicating devices being arranged in the vicinity of the driving mem- 10 ber of the training gear for rough training,

and the second indicating device being arranged on the front end of the gun mount.

The foregoing specification signed at Barmen, Germany, this 10th day of September, 1912.

NORBERT KOCH.

In presence of HELEN NUFER, ALBERT NUFER.

Gayle: of thin patent may be obtained for live cents each, by addressing the Commissioner of Patent, Washington, D. 0. 

